Answer:
<h3><u>1st attachment :-</u></h3>
counters left = 160
fraction of counters left = 160/400
=2/5
<h3> <u>2nd</u><u> </u><u>attachment</u><u> </u><u>:</u><u>-</u></h3>
a) how much cheaper = 13 ×(35.43 -15.37)
= 260.78
b) B.underestimate
Answer:
Y = -2X + 7
Step-by-step explanation:
Y = a(x-h)^2 + k
From (h,k) h = 0 k = 7 x = 2 y = 3
3 = a(2-0) + 7
3 = 2a - 0 + 7
Collect like terms
2a = 3 - 7
2a = -4
Divide both sides by 2
2a/2 = -4/2
a = -2
y = a(x-h) + k
y = -2(x-0) + 7
y = -2x + 0 + 7
y = -2x + 7 or
y + 2x - 7 = 0
Answer: third option, 49x⁶y⁶
Justification:1) Given:
![(7x^3y^3)^2](https://tex.z-dn.net/?f=%287x%5E3y%5E3%29%5E2)
2) Property: power of a product
![(7)^2(x^3)^2(y^3)^2](https://tex.z-dn.net/?f=%287%29%5E2%28x%5E3%29%5E2%28y%5E3%29%5E2)
3) Property: power of power
The answer is 11.
-3+y=8
y= 8+3
y=11
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Okay.
-3x+y=8
y=8+3x or y=3x+8
Or x = (y-8)/3